@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

$line-border-fill:#3498db;
$line-border-empty:#e0e0e0;

.container {
  text-align: center;
  height: 100vh;
  margin-top: 40vh;

  .progress_container {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 30px;
    max-width: 100%;
    width: 350px;
  }

  .progress_container::before {
    content: "";
    background-color: $line-border-empty;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 100%;
    z-index: -1;
  }

  .progress {
    background-color: $line-border-fill;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 4px;
    width: 0%;
    z-index: -1;
    transition: .4s ease;
  }

  .circle {
    background-color: #fff;
    color: #999;
    border-radius: 50%;
    height: 30px;
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid $line-border-empty;
    transition: .4s ease;
  }

  .circle.active {
    background-color: $line-border-fill;
    color: #fff;
    border-color: $line-border-fill;
  }

  .btn {
    background-color: $line-border-fill;
    color: #fff;
    border: 0;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    padding: 8px 30px;
    margin: 5px;
    font-size: 14px;
  }

  .btn:active {
    transform: scale(0.98);
  }

  .btn:focus {
    outline: 0;
  }

  .btn:disabled {
    background-color: $line-border-empty;
    cursor: not-allowed;
  }

}